Transcript Aliens Among Us

Aliens Among Us
Invasive Species and
Their Influence On
Our World
Part Two
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Mathematics & Science Center
Princess or Empress Tree
Paulownia tomentosa
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Mathematics & Science Center
They should have listened to the old adage….
leaves of three, leave it be
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Mathematics & Science Center
Kudzu
Pueraria montana
The original
monster weed!
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Tree of Heaven
Ailanthus altissima
Rapid spread rate is
shown by the
appearance of many
smaller plants around
the base of the original
invader.
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Japanese Honeysuckle
Lonicera japonica
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Parrot’s Feather
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Parrot’s feather can easily take over a pond.
It blocks sunlight from reaching the water
and reduces the amount of open water available for fish to swim.
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Veined Rapa Whelk
Rapana venosa
One of our newer
invasives in the
Chesapeake.
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Rapa Whelk
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This map shows the current known distribution
of Rapa whelks in the Chesapeake Bay.
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Northern Snakehead
Channa argus
Taken from a pond in Crofton, Maryland
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Because the Chesapeake Bay
watershed is so extensive, it is
more vulnerable to the
introduction of aquatic
invasives.
So what can we do to
stop the spread of aliens
in our area?
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Ways to stop the spread of invasive aliens:
Use native plants in your yard or garden.
If you do use an alien plant, make sure before you
plant it that it’s not highly invasive.
Don’t release unwanted pets or plants into the environment.
When fishing, don’t dump live bait into the water. Or use
live bait that is native to the area.
Clean your boat & trailer of plants or other organisms
after using it.
Tell other people about the problem of invasive aliens.
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Asian Oyster
Crassostrea ariakensis
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